Lighthouses keep ships protected from harm and disaster so are used as symbols to represent protection, wheather its proctection for oneself on another. Some get a lighthouse tattoo simply to represent their love of sailing, maritime life or to symbolise the ocean.
Likewise, what does a chandelier tattoo mean?
Often associated with the opulence and wealth of time periods such as the Roaring 20s, chandelier tattoos most often translate to elegance and style, while their ability to cast dazzling light also links a chandelier with purity and vision.